RCM / Omega Piston Set – High Compression 5cc EJ20
£779.99
High-compression forged piston set manufactured by Omega Pistons for the EJ20 engine, adding 5cc of compression volume. Supplied in 92.00mm standard bore plus 92.25mm and 92.50mm oversize.
SKU:
EKS Fitment Advice
EKS currently identifies this product as Shared / Application Fitment
Compatibility of any product, greatly depends on model + year + trim + mods. Most Subaru’s are in different states of tune, so please contact Rich, from EKS to get clarity before purchasing.
Potential Applications
Subaru Impreza 1992-2000 (GC/GF), Subaru Impreza 2001-2002 (GD/GG Bugeye), Subaru Impreza 2003-2005 (GD/GG Blobeye), Subaru Impreza 2006-2007 (GD/GG Hawkeye), Subaru Impreza / WRX STI 2008-2013 (GR/GV), Subaru WRX STI 2014-2021 (VA/VAB), Subaru Forester 1996-2002 (SF), Subaru Forester 2003-2005 (SG early), Subaru Forester 2006-2007 (SG facelift), Subaru Forester 2008-2013 (SH), Subaru Legacy 1992-2003, Subaru Legacy 2003-2009 (BL/BP), Subaru Legacy 2009-2014 (BM/BR)
Full List of EKS Fitment Evidence Types
For context, here are all categories of fitment according to EKS.
- Direct Fitment: means the product is currently listed as fitting the model/generation shown.
- Shared / Application Fitment: means the product may suit shared Subaru platforms, engines, turbos, drivetrains, brakes, cooling/intake setups or modified applications.
- Universal / Service Item: means the product is broadly useful for Subaru servicing, maintenance, workshop use or general ownership.
- Needs Confirmation: means the product appears relevant, but final fitment may depend on extra details.
Product Description
This is a high-compression, forged piston set manufactured by Omega Pistons for the Subaru EJ20 engine, listed as increasing compression by 5cc over standard.
Pistons are forged rather than machined from a solid billet, which Omega state gives a more consistent grain structure and added strength for high-load use. Each piston is individually weighed and batched, with a manufacturer-stated tolerance of within 0.5g per piston and no more than 2.0g deviation across a set of four.
Supplied in 92.00mm standard bore, plus 92.25mm and 92.50mm oversize. Listed fitment covers a wide range of EJ20-equipped Subaru models; please contact Scooby Upgrades to confirm compatibility with your exact engine spec and bore size before ordering.